CN222669094U - A high sealing solenoid valve - Google Patents

Abstract

The utility model provides a high-sealing solenoid valve. After the electromagnetic coil is energized, it combines with the static iron core to generate an electromagnetic field to adsorb the moving iron core, so that the moving iron core moves along the sliding tube close to the threaded cap. In this process, the annular retaining plate on the moving iron core moves close to the threaded cap and combines with the retaining ring to squeeze the compression spring. In the process of moving close to the threaded cap, the moving iron core drives the sealing plug and the sealing ring to move away from the guide port, opens the guide port, and connects the input port with the output port through the guide port. When it is necessary to close the high-sealing solenoid valve, the electromagnetic coil is powered off, and the compression spring restores its elastic deformation. Under the elastic force of the compression spring, the annular retaining plate drives the moving iron core to move away from the threaded cap, squeezing the sealing plug at the guide port, and at the same time, the sealing ring abuts against the barrier block and is sleeved around the guide port. In other words, the sealing plug and the sealing ring form a double sealing mechanism, which greatly improves the sealing performance of the high-sealing solenoid valve.

Description

High-tightness electromagnetic valve

Technical Field

The utility model relates to the field of electromagnetic valves, in particular to a high-tightness electromagnetic valve.

Background

Solenoid valves are electromagnetic controlled industrial equipment, are automatic basic elements for controlling fluids, and belong to actuators, not limited to hydraulic and pneumatic. For use in industrial control systems to adjust the direction, flow, velocity and other parameters of the medium. The solenoid valve can be matched with different circuits to realize expected control, and the control precision and flexibility can be ensured. Solenoid valves are many, and different solenoid valves function at different locations in the control system, most commonly one-way valves, safety valves, directional control valves, speed regulating valves, and the like. Solenoid valves are classified into direct-acting solenoid valves, step-by-step direct-acting solenoid valves, and pilot-operated solenoid valves in principle. When the direct-acting electromagnetic valve is electrified, the electromagnetic coil generates electromagnetic force to lift the closing member from the valve seat, and the valve is opened. When the power is off, the electromagnetic force disappears, the spring presses the closing member against the valve seat, and the valve is closed.

However, in the conventional direct-acting solenoid valve, for example, the technical scheme disclosed in the patent with the application number of CN201910616567.4 and the name of solenoid valve, there is a problem that the sealing performance is reduced and the sealing stability of the solenoid valve is affected in the long-time use process.

Disclosure of utility model

Based on this, it is necessary to provide a high-tightness electromagnetic valve aiming at the technical problems that the sealing performance is reduced and the sealing stability of the electromagnetic valve is affected in the long-time use process of the traditional direct-acting electromagnetic valve.

A high-tightness electromagnetic valve comprises an electromagnetic driving mechanism, a blocking mechanism and a valve body;

The electromagnetic driving mechanism comprises a shell, an electromagnetic coil, a static iron core, a sliding tube, a threaded cap and a gasket, wherein the electromagnetic coil is arranged in the shell, the sliding tube is partially arranged in the shell, the sliding tube penetrates through the electromagnetic coil, a threaded hole is formed in one end of the shell, the threaded head is arranged at one end of the sliding tube, the static iron core is contained in the part, close to the threaded head, of the sliding tube and is connected with the sliding tube, the threaded head is matched with the threaded hole, the threaded head is inserted into the threaded hole and is in threaded connection with the shell, the gasket is sleeved on the threaded head and is in butt joint with the outer wall of the shell, the threaded cap is matched with the threaded head, the threaded cap is sleeved on the threaded head and is in butt joint with one face, opposite to the shell, of the gasket, and a connecting seat is arranged at one end, far from the threaded cap, of the shell and is provided with the threaded tube;

The blocking mechanism comprises a clamping ring, a movable iron core, a compression spring, a sealing plug and a sealing ring; the clamping ring is accommodated in the threaded pipe and is connected with the threaded pipe, the sliding pipe penetrates through the clamping ring, the movable iron core is matched with the sliding pipe, the movable iron core is partially inserted into the sliding pipe and is in sliding connection with the sliding pipe, an annular clamping plate is arranged at one end of the movable iron core, which is exposed out of the sliding pipe, the compression spring is matched with the movable iron core, the compression spring is sleeved on the movable iron core, one end of the compression spring is abutted against the clamping ring, one end of the compression spring, which is far away from the clamping ring, is abutted against the annular clamping plate, a fixing groove is formed at one end of the movable iron core, which is far away from the threaded cap, and is matched with the sealing plug, the sealing plug is inserted into the fixing groove and is connected with the movable iron core, an annular accommodating groove is formed at one end of the sealing plug, which is far away from the threaded cap, and is matched with the sealing ring, and the annular accommodating groove is partially inserted into the annular accommodating groove and is connected with the sealing plug;

the valve body is internally provided with a baffle block, the baffle block is provided with a flow guide port, the input port is communicated with the output port through the flow guide port, the annular clamping plate extrudes the sealing plug at the flow guide port through the movable iron core under the action of the elasticity of the compression spring, and the sealing ring is abutted to the baffle block and sleeved around the flow guide port.

In one embodiment, the connecting pipe is provided with a receiving ring in the inner part of one end far away from the shell, the blocking mechanism further comprises a sealing ring, the sealing ring is abutted to the receiving ring, and one end far away from the shell of the threaded pipe is abutted to the sealing ring.

In one embodiment, the receiving ring is integrally formed with the connecting tube.

In one embodiment, the threaded head is integrally formed with the sliding tube.

In one embodiment, the connection base and the housing are integrally formed.

In one embodiment, the movable iron core and the annular clamping plate are integrally formed.

In one embodiment, the blocking block is integrally formed with the valve body.

In one embodiment, the threaded tube is integrally formed with the connection block.

In one embodiment, the clamping ring and the threaded tube are integrally formed.

In one embodiment, the connecting tube is integrally formed with the valve body.

When the high-tightness electromagnetic valve is required to be opened in the working process, the electromagnetic coil is electrified and then combined with the static iron core to generate an electromagnetic field to adsorb the movable iron core, so that the movable iron core moves along the sliding pipe close to the threaded cap. In this process, the annular detent plate on the plunger is moved closer to the screw cap and the compression spring is compressed in combination with the detent ring. The movable iron core drives the sealing plug and the sealing ring to move away from the diversion port in the process of moving close to the threaded cap, and the diversion port is opened, so that the input port is communicated with the output port through the diversion port. When the high-tightness electromagnetic valve needs to be closed, the electromagnetic coil is powered off, the compression spring recovers elastic deformation, the annular clamping plate drives the movable iron core to move away from the threaded cap under the action of the elastic force of the compression spring, the sealing plug is extruded at the diversion opening, and meanwhile the sealing ring is abutted to the blocking block and sleeved around the diversion opening. That is, the sealing plug and the sealing ring form a double sealing mechanism, so that the sealing performance of the high-tightness electromagnetic valve is greatly improved.

Drawings

FIG. 1 is a schematic diagram of a high tightness solenoid valve in one embodiment;

FIG. 2 is a schematic view of a portion of a high tightness solenoid valve in one embodiment;

FIG. 3 is a schematic view of a portion of a high tightness solenoid valve in one embodiment;

FIG. 4 is a schematic view of a portion of a high tightness solenoid valve in one embodiment;

FIG. 5 is a schematic view of a portion of a high tightness solenoid valve in one embodiment;

Fig. 6 is a schematic view of the structure of the valve body in one embodiment.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below. In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 6, the present utility model provides a high-tightness electromagnetic valve 10, wherein the high-tightness electromagnetic valve 10 comprises an electromagnetic driving mechanism 100, a blocking mechanism 200 and a valve body 300.

The electromagnetic drive mechanism 100 includes a housing 110, an electromagnetic coil (not shown), a stationary core (not shown), a sliding tube 120, a threaded cap 130, and a washer 140. An electromagnetic coil is provided in the housing 110, a sliding tube 120 is partially provided in the housing 110, and the sliding tube 120 passes through the electromagnetic coil. One end of the shell 110 is provided with a threaded hole 101, one end of the sliding tube 120 is provided with a threaded head 121, and the static iron core is accommodated in a part of the sliding tube 120 close to the threaded head 121 and is connected with the sliding tube 120. The screw head 121 is matched with the screw hole 101, and the screw head 121 is inserted into the screw hole 101 and is screwed with the shell 110. In the present embodiment, the screw head 121 is integrally formed with the sliding tube 120 to increase the structural strength and structural stability of the sliding tube 120. The gasket 140 is sleeved on the threaded head 121 and is abutted against the outer wall of the shell 110, the threaded cap 130 is matched with the threaded head 121, and the threaded cap 130 is sleeved on the threaded head 121 and is abutted against one surface of the gasket 140, which is opposite to the shell 110. The end of the housing 110 away from the screw cap 130 is provided with a connecting seat 111, and in this embodiment, the connecting seat 111 and the housing 110 are integrally formed to increase the structural strength and structural stability of the housing 110. The connecting base 111 is provided with a threaded pipe 112. In the present embodiment, the threaded tube 112 and the connecting base 111 are integrally formed, so as to increase the structural strength and structural stability of the connecting base 111.

The plugging mechanism 200 includes a snap ring 210, a plunger 220, a compression spring 230, a sealing plug 240, and a sealing ring 250. The retaining ring 210 is accommodated in the threaded tube 112 and is connected to the threaded tube 112, and in this embodiment, the retaining ring 210 and the threaded tube 112 are integrally formed. The sliding tube 120 passes through the detent ring 210. The movable iron core 220 is matched with the sliding tube 120, and the movable iron core 220 is partially inserted into the sliding tube 120 and is in sliding connection with the sliding tube 120. An annular clamping plate 221 is disposed at an end of the movable core 220 exposed to the sliding tube 120. In the present embodiment, the movable iron core 220 and the annular clamping plate 221 are integrally formed, so as to increase the structural strength and structural stability of the movable iron core 220. The compression spring 230 is matched with the movable iron core 220, the compression spring 230 is sleeved on the movable iron core 220, one end of the compression spring 230 is abutted with the clamping ring 210, and one end of the compression spring 230, which is far away from the clamping ring 210, is abutted with the annular clamping plate 221. The movable iron core 220 is provided with a fixed groove 201 at one end far away from the screw cap 130, the fixed groove 201 is matched with a sealing plug 240, and the sealing plug 240 is inserted into the fixed groove 201 and connected with the movable iron core 220. An annular accommodating groove 202 is formed in one end, away from the threaded cap 130, of the sealing plug 240, the annular accommodating groove 202 is matched with a sealing ring 250, and the sealing ring 250 is partially inserted into the annular accommodating groove 202 and connected with the sealing plug 240.

One side of the valve body 300 is provided with an input port 301 and the other side is provided with an output port 302. The top of the valve body 300 is provided with a connecting pipe 310, the pipe wall of the connecting pipe 310 is provided with internal threads, the internal threads are matched with the threaded pipe 112, and the threaded pipe 112 is inserted into the connecting pipe 310 and is in threaded connection with the connecting pipe 310. The valve body 300 is provided therein with a block 320, and in this embodiment, the block 320 is integrally formed with the valve body 300 to increase the structural strength and structural stability of the valve body 300. The baffle block 320 is provided with a flow guide port 303, and the input port 301 is communicated with the output port 302 through the flow guide port 303. Under the action of the elastic force of the compression spring 230, the annular clamping plate 221 presses the sealing plug 240 at the diversion opening 303 through the movable iron core 220, and the sealing ring 250 is abutted against the blocking block 320 and sleeved around the diversion opening 303.

In order to further improve the sealing performance of the high tightness electromagnetic valve 10, in one embodiment, the inner part of the end of the connecting pipe 310 away from the housing 110 is provided with a receiving ring 311, and the plugging mechanism 200 further comprises a sealing ring 260, wherein the sealing ring 260 abuts against the receiving ring 311. The end of the threaded tube 112 remote from the housing 110 abuts the sealing ring 260. In one embodiment, the receiving ring 311 is integrally formed with the connecting tube 310 to increase the structural strength and stability of the connecting tube 310. In the present embodiment, the connection pipe 310 is integrally formed with the valve body 300 to increase the structural strength and structural stability of the valve body 300. In this way, the seal ring 260 further improves the sealing performance of the high-tightness electromagnetic valve 10.

In the operation process of the high-tightness electromagnetic valve 10, when the high-tightness electromagnetic valve 10 needs to be opened, the electromagnetic coil is electrified and then combined with the static iron core to generate an electromagnetic field to absorb the movable iron core 220, so that the movable iron core 220 moves along the sliding pipe 120 close to the threaded cap 130. In this process, the annular detent plate 221 on the plunger 220 moves close to the screw cap 130 in combination with the detent ring 210 to compress the compression spring 230. The plunger 220 moves the sealing plug 240 and the sealing ring 250 away from the conduction port 303 during the process of moving close to the screw cap 130, and opens the conduction port 303, so that the input port 301 is communicated with the output port 302 through the conduction port 303. When the high-tightness electromagnetic valve 10 needs to be closed, the electromagnetic coil is powered off, the compression spring 230 recovers elastic deformation, the annular clamping plate 221 drives the movable iron core 220 to move away from the threaded cap 130 under the action of the elastic force of the compression spring 230, the sealing plug 240 is extruded at the diversion opening 303, and meanwhile the sealing ring 250 is abutted on the blocking block 320 and sleeved around the diversion opening 303. That is, the sealing plug 240 and the sealing ring 250 form a double sealing mechanism, greatly improving the sealing performance of the high tightness solenoid valve 10.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (10)

1. The high-tightness electromagnetic valve is characterized by comprising an electromagnetic driving mechanism, a blocking mechanism and a valve body;

The electromagnetic driving mechanism comprises a shell, an electromagnetic coil, a static iron core, a sliding tube, a threaded cap and a gasket, wherein the electromagnetic coil is arranged in the shell, the sliding tube is partially arranged in the shell, the sliding tube penetrates through the electromagnetic coil, a threaded hole is formed in one end of the shell, the threaded head is arranged at one end of the sliding tube, the static iron core is contained in the part, close to the threaded head, of the sliding tube and is connected with the sliding tube, the threaded head is matched with the threaded hole, the threaded head is inserted into the threaded hole and is in threaded connection with the shell, the gasket is sleeved on the threaded head and is in butt joint with the outer wall of the shell, the threaded cap is matched with the threaded head, the threaded cap is sleeved on the threaded head and is in butt joint with one face, opposite to the shell, of the gasket, and a connecting seat is arranged at one end, far from the threaded cap, of the shell and is provided with the threaded tube;

The blocking mechanism comprises a clamping ring, a movable iron core, a compression spring, a sealing plug and a sealing ring; the clamping ring is accommodated in the threaded pipe and is connected with the threaded pipe, the sliding pipe penetrates through the clamping ring, the movable iron core is matched with the sliding pipe, the movable iron core is partially inserted into the sliding pipe and is in sliding connection with the sliding pipe, an annular clamping plate is arranged at one end of the movable iron core, which is exposed out of the sliding pipe, the compression spring is matched with the movable iron core, the compression spring is sleeved on the movable iron core, one end of the compression spring is abutted against the clamping ring, one end of the compression spring, which is far away from the clamping ring, is abutted against the annular clamping plate, a fixing groove is formed at one end of the movable iron core, which is far away from the threaded cap, and is matched with the sealing plug, the sealing plug is inserted into the fixing groove and is connected with the movable iron core, an annular accommodating groove is formed at one end of the sealing plug, which is far away from the threaded cap, and is matched with the sealing ring, and the annular accommodating groove is partially inserted into the annular accommodating groove and is connected with the sealing plug;

the valve body is internally provided with a baffle block, the baffle block is provided with a flow guide port, the input port is communicated with the output port through the flow guide port, the annular clamping plate extrudes the sealing plug at the flow guide port through the movable iron core under the action of the elasticity of the compression spring, and the sealing ring is abutted to the baffle block and sleeved around the flow guide port.

2. The high tightness solenoid valve according to claim 1, wherein a receiving ring is provided inside an end of the connecting pipe away from the housing, the blocking mechanism further includes a seal ring abutting on the receiving ring, and an end of the threaded pipe away from the housing abuts on the seal ring.

3. The high tightness solenoid valve of claim 2 wherein said receiving ring is integrally formed with said connecting tube.

4. The high tightness solenoid valve according to claim 1 wherein said threaded head is integrally formed with said sliding tube.

5. The high tightness solenoid valve according to claim 1 wherein said connection block is integrally formed with said housing.

6. The high tightness solenoid valve of claim 1 wherein said plunger is integrally formed with said annular detent plate.

7. The high tightness solenoid valve of claim 1 wherein said blocking block is integrally formed with said valve body.

8. The high tightness solenoid valve according to claim 1 wherein said threaded tube is integrally formed with said connection block.

9. The high tightness solenoid valve of claim 1 wherein said detent ring is integrally formed with said threaded tube.

10. The high tightness solenoid valve of claim 1 wherein said connecting tube is integrally formed with said valve body.